<!DOCTYPE html SYSTEM "http://www.thymeleaf.org/dtd/xhtml1-strict-thymeleaf-spring4-4.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org">
<head>
    <title>Title</title>
</head>
<body>

 this is booklist;

<div th:unless ="${#lists.isEmpty(admins)}">
    <dl th:each="admin:${admins}">
        <span th:text="${admin.username}">username</span>
    </dl>
</div>


</body>
</html>